/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.tools.search.internal.ui.text;
import com.google.dart.tools.search.core.text.TextSearchEngine;
import com.google.dart.tools.search.core.text.TextSearchMatchAccess;
import com.google.dart.tools.search.core.text.TextSearchRequestor;
import com.google.dart.tools.search.internal.core.text.PatternConstructor;
import com.google.dart.tools.search.internal.ui.Messages;
import com.google.dart.tools.search.internal.ui.SearchMessages;
import com.google.dart.tools.search.ui.ISearchQuery;
import com.google.dart.tools.search.ui.ISearchResult;
import com.google.dart.tools.search.ui.text.AbstractTextSearchResult;
import com.google.dart.tools.search.ui.text.FileTextSearchScope;
import com.google.dart.tools.search.ui.text.Match;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import java.io.File;
import java.util.ArrayList;
import java.util.regex.Pattern;
public class FileSearchQuery implements ISearchQuery {
private final static class TextSearchResultCollector extends TextSearchRequestor {
private static String getContents(TextSearchMatchAccess matchRequestor, int start, int end) {
StringBuffer buf = new StringBuffer();
for (int i = start; i < end; i++) {
char ch = matchRequestor.getFileContentChar(i);
if (Character.isWhitespace(ch) || Character.isISOControl(ch)) {
buf.append(' ');
} else {
buf.append(ch);
}
}
return buf.toString();
}
private final AbstractTextSearchResult fResult;
private final boolean fIsFileSearchOnly;
private final boolean fSearchInBinaries;
private ArrayList<FileResourceMatch> fCachedMatches;
private TextSearchResultCollector(AbstractTextSearchResult result, boolean isFileSearchOnly,
boolean searchInBinaries) {
fResult = result;
fIsFileSearchOnly = isFileSearchOnly;
fSearchInBinaries = searchInBinaries;
}
@Override
public boolean acceptExternalFile(File file) throws CoreException {
if (fIsFileSearchOnly) {
fResult.addMatch(new ExternalFileMatch(file));
}
flushMatches();
return true;
}
@Override
public boolean acceptFile(IFile file) throws CoreException {
if (fIsFileSearchOnly) {
fResult.addMatch(new FileMatch(file));
}
flushMatches();
return true;
}
@Override
public boolean acceptPatternMatch(TextSearchMatchAccess matchRequestor) throws CoreException {
int matchOffset = matchRequestor.getMatchOffset();
LineElement lineElement = getLineElement(matchOffset, matchRequestor);
if (lineElement != null) {
FileResourceMatch fileMatch = matchRequestor.createMatch(lineElement);
fCachedMatches.add(fileMatch);
}
return true;
}
@Override
public void beginReporting() {
fCachedMatches = new ArrayList<FileResourceMatch>();
}
@Override
public void endReporting() {
flushMatches();
fCachedMatches = null;
}
@Override
public boolean reportBinaryFile(IFile file) {
return fSearchInBinaries;
}
private void flushMatches() {
if (!fCachedMatches.isEmpty()) {
fResult.addMatches(fCachedMatches.toArray(new Match[fCachedMatches.size()]));
fCachedMatches.clear();
}
}
private LineElement getLineElement(int offset, TextSearchMatchAccess matchRequestor) {
int lineNumber = 1;
int lineStart = 0;
if (!fCachedMatches.isEmpty()) {
// match on same line as last?
FileResourceMatch last = fCachedMatches.get(fCachedMatches.size() - 1);
LineElement lineElement = last.getLineElement();
if (lineElement.contains(offset)) {
return lineElement;
}
// start with the offset and line information from the last match
lineStart = lineElement.getOffset() + lineElement.getLength();
lineNumber = lineElement.getLine() + 1;
}
if (offset < lineStart) {
return null; // offset before the last line
}
int i = lineStart;
int contentLength = matchRequestor.getFileContentLength();
while (i < contentLength) {
char ch = matchRequestor.getFileContentChar(i++);
if (ch == '\n' || ch == '\r') {
if (ch == '\r' && i < contentLength && matchRequestor.getFileContentChar(i) == '\n') {
i++;
}
if (offset < i) {
String lineContent = getContents(matchRequestor, lineStart, i); // include line delimiter
return new LineElement(matchRequestor.getFile(), lineNumber, lineStart, lineContent);
}
lineNumber++;
lineStart = i;
}
}
if (offset < i) {
String lineContent = getContents(matchRequestor, lineStart, i); // until end of file
return new LineElement(matchRequestor.getFile(), lineNumber, lineStart, lineContent);
}
return null; // offset outside of range
}
}
private final FileTextSearchScope fScope;
private final String fSearchText;
private final boolean fIsRegEx;
private final boolean fIsCaseSensitive;
private FileSearchResult fResult;
public FileSearchQuery(String searchText, boolean isRegEx, boolean isCaseSensitive,
FileTextSearchScope scope) {
fSearchText = searchText;
fIsRegEx = isRegEx;
fIsCaseSensitive = isCaseSensitive;
fScope = scope;
}
@Override
public boolean canRerun() {
return true;
}
@Override
public boolean canRunInBackground() {
return true;
}
@Override
public String getLabel() {
return SearchMessages.FileSearchQuery_label;
}
public String getResultLabel(int nMatches) {
String searchString = getSearchString();
if (searchString.length() > 0) {
// text search
if (isScopeAllFileTypes()) {
// search all file extensions
if (nMatches == 1) {
Object[] args = {searchString, fScope.getDescription()};
return Messages.format(SearchMessages.FileSearchQuery_singularLabel, args);
}
Object[] args = {searchString, new Integer(nMatches), fScope.getDescription()};
return Messages.format(SearchMessages.FileSearchQuery_pluralPattern, args);
}
// search selected file extensions
if (nMatches == 1) {
Object[] args = {searchString, fScope.getDescription(), fScope.getFilterDescription()};
return Messages.format(SearchMessages.FileSearchQuery_singularPatternWithFileExt, args);
}
Object[] args = {
searchString, new Integer(nMatches), fScope.getDescription(),
fScope.getFilterDescription()};
return Messages.format(SearchMessages.FileSearchQuery_pluralPatternWithFileExt, args);
}
// file search
if (nMatches == 1) {
Object[] args = {fScope.getFilterDescription(), fScope.getDescription()};
return Messages.format(SearchMessages.FileSearchQuery_singularLabel_fileNameSearch, args);
}
Object[] args = {fScope.getFilterDescription(), new Integer(nMatches), fScope.getDescription()};
return Messages.format(SearchMessages.FileSearchQuery_pluralPattern_fileNameSearch, args);
}
@Override
public ISearchResult getSearchResult() {
if (fResult == null) {
fResult = new FileSearchResult(this);
new SearchResultUpdater(fResult);
}
return fResult;
}
public FileTextSearchScope getSearchScope() {
return fScope;
}
public String getSearchString() {
return fSearchText;
}
public boolean isCaseSensitive() {
return fIsCaseSensitive;
}
public boolean isFileNameSearch() {
return fSearchText.length() == 0;
}
public boolean isRegexSearch() {
return fIsRegEx;
}
@Override
public IStatus run(final IProgressMonitor monitor) {
AbstractTextSearchResult textResult = (AbstractTextSearchResult) getSearchResult();
textResult.removeAll();
Pattern searchPattern = getSearchPattern();
boolean searchInBinaries = !isScopeAllFileTypes();
TextSearchResultCollector collector = new TextSearchResultCollector(
textResult,
isFileNameSearch(),
searchInBinaries);
return TextSearchEngine.create().search(fScope, collector, searchPattern, monitor);
}
// /**
// * @param result all result are added to this search result
// * @param monitor the progress monitor to use
// * @param file the file to search in
// * @return returns the status of the operation
// */
// public IStatus searchInFile(final AbstractTextSearchResult result,
// final IProgressMonitor monitor, IFile file) {
// FileTextSearchScope scope = FileTextSearchScope.newSearchScope(new IResource[] {file},
// new String[] {"*"}, true); //$NON-NLS-1$
//
// Pattern searchPattern = getSearchPattern();
// TextSearchResultCollector collector = new TextSearchResultCollector(result, isFileNameSearch(),
// true);
//
// return TextSearchEngine.create().search(scope, collector, searchPattern, monitor);
// }
protected Pattern getSearchPattern() {
return PatternConstructor.createPattern(fSearchText, fIsCaseSensitive, fIsRegEx);
}
private boolean isScopeAllFileTypes() {
String[] fileNamePatterns = fScope.getFileNamePatterns();
if (fileNamePatterns == null) {
return true;
}
for (int i = 0; i < fileNamePatterns.length; i++) {
if ("*".equals(fileNamePatterns[i])) { //$NON-NLS-1$
return true;
}
}
return false;
}
}